Method of anchoring and leveling screeds



Ai -12, 1930, E. K. COLE 131 ,1023

' METHOD OF ANCHORING 'AND LEVELING SCREEDS Filed Feb. 7, 1 a

JM/KM.

each ot Figure 6 shows a side view of. thebodyeportion'of the leveling member. 7

Referring to the accompanying drawings, it will be seen that my improved device comrises a screed anchorlng member and a screed evelinglmemberpermanentl connected with er and'designed to e inserted in a concrete base in the same manner in. which screed anchors are now customarily'applied. The screed anchoring member is preferably formed of a single piece of wire and is provided with two legs lodesigned to'be insorted into the concrete base, and two upwardly extending arms 11 designedto ems brace. a screed and having nail holes 12 at their u per ends. The central portion of the wire b which the anchor is formed is referably formed with a loop 13 in which t ere is inserted a. screed levelin base member which comprisesa tapered bo y portion 14 havi n a screw threaded opening 15v extended through it and being formed with an annular groove 16 desi ed to receive the loop 13 and to be supporte in an upright position by said loop. Mounted in the screw threaded opening 15 is a screw threaded shankl'l having at its upper end a screed supporting head 18 referably rounded at 19 at its utpper end.

he sides of the head 18 are pre erablyof hexagon shape to, receive awrench. V

The reference numeral 20 ndicatesa. concrete base and 21. a wooden screed, bothof ordinary construction.

In practical use, when the concrete baseis in a plastic condition, a number of my improved screed anchoring and leveling devices are laced in rows properly spaced apart from see other throughout the surface of the concrete base. They are inserted by simply push ing them down into the base until the under- Surface of the screed supporting head 18 comes ap roximately level with the concrete base, as s own'inFigure 1. After, the base has set and hardened, and it is desired to level the screeds, thenthe operator first establishes a level over the entire floor along the lines where the bottoms of the screeds. are tolie the use of a straight edge. Then the operator uses a quick acting wrench designed to fit the screed supporting heads, and applies this wrench to the headsandscrews them upward} ly. until they are atthe desired. level. This may bevery quickly and easily accomplished,

after. thefscreeds I chormembers, the screed supporting heads This is usually done by.

and on account of the screw threads, the leveling may be done with great accuracy, and

when once placed in roper position, these heads are substantial y immovable except bers and are nailed to the anchor members in the ordinary manner. After the screeds have been nailed to the anchors, then the operator employs a wrench and turns each screed supporting head a certain predetermined number of'revolutions, say for instance, two revolutions. This has the effect of forcing the screed u wardlyand takingup any play or 'lost motibn that there might be between the It also forces the. rounded uppersurface of the screed support-f screed and the anchor.

ing head into the fibers of the wood, caus ng the'wo'odl to be compressed and placed under tension." Obviously, if allof the screed sup-' porting heads are'turned the same number of revolutions, this tenslon and compressionwill eequall appliedthroughout the entire floor.

Then, a ter the woodenTfloor has been'laid, and in'theevent that'the wood of which the screeds are formed should contract or shrink, it willstill remain in firmcontact with the rounded tops of the screed supporting heads, because at that point thewood had been previously com ressed and put under tens on. In practice, l employed that are thoroughly" soake in water, and yet after having become thorough} 1y dried, theywill not contract or shrink to such an extent as to clear themselves from engagement with the screed supportin heads.

practice with my improved method, the

anchoring and leveli devices are embedded in the concrete when itisin a plastic condition. Then the screed supporting heads are screwednpwardly to a common level, and

ave been nailed to the anare againturned upwardly a certain predetermined amount, and all of the heads in a floor are screwed upwardly to substantially the same distance, resulting in the compres:

sion of such portions of the screeds asare in immediate contact'with'the heads, and at. the same time taking all play or lost motion out of the connection betwe'en the screeds and the anchors, so that 'subsequeht contraction or. shrinking-ofthe screeds will not cause any play or lostmotion between the screeds and have found that screedsv ma be,

the screed supporting heads, and the floor will bwevented from creaking when being w dupomy Iolaimasmy-inv'entionz .1, Themethod of anchoring and levelin screedsupon a concrete base, which metho consists in insert a row of screed anchors 'in plastic concrete. then adjustably se- (curing aserifes of screw threaded members to V i i the concrete base inglinewith the anchors,*

' then leyeling thelupper endsj of all of the c .y e screw threaded members byscrewingthemup 3 i 4 or down, then firmlyvfiiing Wooden-screeds I to the anchors, land-finally; screwing all of e I, I the screw threadedf'inelnbers upwardlysubstantiallythe same "distance, and thereby apj plyingan ,lipward strainnpon theanchors f and their connections through "the screeds, and partially compressing the material of the scr'e'ed at the points wheresaidscrewj threade ed members engage it;v

, 2. The method of alichoring and' leveling I screeds on a concrete base,.which consists in f first inserting a row of screed anchors in a plastic, "concrete base, then inserting insaid base means for adjustably applying upward pressure to theunderside offa screed when strain upon said anc applied to said anchors, then applying a screed to said anchorsfand finally adjusting saidpressure applyingl-means to exert upward" I ors and their connec- M I tions through said screeds.

' the pressure applyingmeans, then adjusting, t h the pressure applying means toaline said 3. The method ofanchoring and leveling screecls on a concrete base,'wh'1ch consists in first lnserting a row of screed anchors in a plastic concrete base, thenxinseitinginfsaid;

' base means for adj'ilstably applying anup- Ward'pressure tothe under side of a" screed e p when applied tosaid anchors, then placing V a screed adjacent'to said anchors and above screeds horizontally, then perinanently fas- 'tening the screeds to said anchors, andfurther f'adjusting said pressure applying, means to permanently apply an upwardstrain upon said-anchors and their connections through said screeds.

45. The method ofanchoring and leveling screeds upon a concrete base,Which consists" in first inserting in a plastic concrete base a row of screed anchors and allowin thereoncrete to harden, applying ascree ,adjacentto said anchors,and aIiningthesaine horizontally, then permanently securing the screedjto said anchors, and finally applying devices torproduce a permanent upward strain upon said anchors and to their connections through said screedpk I Des Moines, Iowa, December 31,1926.

7 e ELMER KzooLE. 7 

